There are several air filter types to consider, each designed to target specific needs. The most common types include:
Fiberglass filters
Fiberglass filters
Fiberglass filters are the lowest-quality option, providing minimal filtration. While they block large particles like dust and lint, they do little to improve indoor air quality, failing to trap allergens or pet dander. These outdated filters clog quickly, reducing airflow, which increases energy costs and puts strain on your HVAC system. Plus, they need to be replaced more frequently, adding to long-term expenses.
Pleated Filters
Pleated filters are effective at trapping smaller particles that produce unhealthy air quality like pollen, pet dander, and mold spores. Made from cotton or polyester fabric, these filters have a larger surface area due to their pleats, allowing for more efficient particle capture. They are available in a variety of MERV ratings, which measure their filtration efficiency.
Electrostatic Filters
Electrostatic filters use self-charging fibers to attract airborne particles. This makes them excellent for improving indoor air quality by trapping both small and large particles. These are great for homes with pets or residents with allergies and can be washed and reused, making them eco-friendly.
Pleated + Electrostatic Air Filter
Pleated electrostatic filters, like those sold at Filterbuy, are engineered to provide superior filtration by using an electrostatic charge to attract and capture extra pollutants that traditional filter media might miss. This static charge acts like a magnet, pulling in more particles such as dust, pollen, pet dander, and even smoke. Available in multiple MERV ratings, these filters are versatile enough to suit any home’s needs.
They are especially beneficial for homes with allergy sufferers or pets, as they capture a wide range of allergens and airborne contaminants that can otherwise impact indoor air quality. In addition to their enhanced filtration, the durable pleated design increases surface area, ensuring a longer filter life and reducing the frequency of filter replacements. With Filterbuy pleated electrostatic filters, you get both extra protection and longer-lasting performance for your HVAC system.
Pleated electrostatic filters from Filterbuy offer enhanced filtration by using an electrostatic charge to attract particles like dust, pollen, pet dander, and smoke that traditional filters might miss. Available in various MERV ratings, they're ideal for homes with allergy sufferers or pets, capturing a wide range of allergens and contaminants. The durable pleated design increases surface area, extending filter life and reducing replacement frequency, giving you both superior protection and longer-lasting performance for your HVAC system.
Shop NowMERV Rating: What It Means and Why It Matters
There are several air filter types to consider, each designed to target specific needs. The most common types include:
These filters offer basic filtration, capturing less than 20% of large particles like dust, lint, and fibers. They are typically used for very basic HVAC system protection but do little to improve indoor air quality.
A good all-around option for most homes, MERV 8 filters capture smaller particles such as pollen, mold spores, and dust mites. They provide a solid balance between improving indoor air quality and protecting your HVAC system from debris.
Shop Merv 8
These filters are great for homes with pets or allergy sufferers, capturing smaller allergens like pet dander, fine dust, and mold spores. They offer enhanced filtration, making them ideal for households that need extra protection from airborne particles.
Shop Merv 11
The highest-rated filters for residential use, MERV 13 filters are perfect for homes with allergies, asthma, or other respiratory issues. They capture airborne bacteria, smoke, and even some viruses, providing superior indoor air quality.
Shop Merv 13How To Choose Your Air Filter Size
Choosing the correct size air filter is critical to the performance of your HVAC system. Air filters come in many sizes, and finding the right fit ensures proper airflow and filtration. Most air filters have two sizes printed on the side: nominal and actual size.
- Nominal Size: This is the rounded measurement that manufacturers use to label the filter. For example, a filter labeled 20x20x1 may not actually be those exact dimensions.
- Actual Size: This refers to the precise physical measurement of the filter, typically smaller than the nominal size. For instance, a 20x20x1 nominal filter will be trimmed down to an actual size of 19.5 x 19.5 x 0.75 inches. Knowing the actual size is important to ensure a proper fit in your HVAC system.
To choose the right filter, always check both the nominal and actual size, which are usually listed on the side of the filter frame. If you’re unsure, you can always measure the existing filter or consult your HVAC system’s manual for the recommended size
At Filterbuy, we offer a wide range of filters in both standard and custom sizes to fit any system. Whether you need a 1-inch or 2-inch filter, understanding the difference between nominal and actual size ensures you get the perfect fit for optimal system performance.
Shop Air FiltersHow To Change Your Air Filter
Changing your air filter is quick and easy:
- Turn off your HVAC system to prevent debris from entering the unit while changing the filter.
- Locate your air filter— usually behind a return air grille or in the furnace compartment.
- Remove the old filter and check for the correct size printed on the side.
- Insert the new filter in the correct orientation, following the arrows printed on the frame.
- Turn the HVAC system back on and enjoy cleaner, healthier air!
Where To Buy Air Filters
Finding the right air filter is only half the battle—purchasing from a trusted source ensures your HVAC system stays protected and your indoor air quality improves. At Filterbuy, we offer a wide selection of high-quality filters, including top brand replacements, all delivered straight to your door.
Buying your air filters online with Filterbuy comes with several advantages over traditional in-store shopping. Not only can you easily browse and compare a wider range of options, but you’ll also avoid the hassle of hunting down the right size or brand at a local store, where stock can be limited. Online shopping offers the convenience of delivery right to your doorstep, saving you time and effort. Plus, our quantity price breaks help you save more, and with Auto Delivery, you’ll never forget a replacement again.
Shop Air FiltersBranded Vs. Non-Branded Filters
When shopping for replacement air filters, you’ll encounter both branded and non-branded options. Branded filters are produced by HVAC manufacturers like Trane, Lennox, or Rheem, while non-branded filters are made by independent manufacturers like Filterbuy. Non-branded filters provide the same high-quality filtration at a more affordable price, and at Filterbuy, our filters are designed to fit all major HVAC brands while offering superior performance.
One common point of confusion with branded filters is the way their sizes are labeled. For example, a filter with an actual size of 4.38 inches thick may be listed as either a 4-inch or a 5-inch filter, depending on the website or manufacturer. This can make it difficult to know exactly which size to order if you're relying only on the nominal size (the rounded number often used in product listings).
The key is to always check the actual size, which is usually printed on the filter itself or available in the product details. For instance, a filter listed as 4 inches on one site may actually be 4.38 inches thick, and the same filter could be labeled as 5 inches on another site. Understanding these small differences can help ensure you get the perfect fit for your HVAC system.
Similarly, 1-inch and 2-inch filters are often interchangeable, meaning you can use either thickness in your system as long as the filter slot can accommodate the depth. A 2-inch filter typically has a larger surface area and can last longer, but either option will work if it fits your system’s filter housing. Always check your HVAC system’s manual or the current filter to ensure compatibility.
Why Filterbuy?
When it comes to air filters, Filterbuy is America’s best partner for replacement air filters. Here’s why:
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Extensive Selection:
Whether you need fiberglass, pleated, electrostatic, or high-MERV filters, we have an option to suit every home and HVAC system.
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Superior Quality:
All our filters are made in the USA using premium materials designed for optimal filtration and long-lasting performance.
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Affordable pricing:
Save money by stocking up on filters with Filterbuy. We offer both branded and non-branded filters, with affordable pricing and the convenience of online ordering and shopping in bulk.
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Convenient Auto-Delivery:
Never miss a replacement! With our auto-delivery service, you can have filters shipped directly to your door when it’s time to change them.
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Exceptional Customer Service:
Our team is here to help you find the right filter and answer any questions you may have about air filtration.
Air Filter FAQs
It’s recommended to replace your air filter every 30 to 90 days, depending on usage, filter type, and indoor air quality needs.
A filter with a MERV rating between 11 and 13 is ideal for homes with allergy sufferers, as it captures smaller particles like pet dander, dust mites, and pollen.
Using a filter with a MERV rating that’s too high for your HVAC system can restrict airflow, forcing the system to work harder and potentially causing damage.
While 1-inch and 2-inch filters are often interchangeable in terms of fit, a thicker 2-inch filter generally lasts longer and offers better filtration.
A dirty or clogged filter can reduce airflow, cause uneven heating or cooling, and increase your energy bills.
The size of your filter is usually printed on the side of your current filter. If it’s not visible, measure the length, width, and thickness to find the correct replacement.
Yes! A clogged or dirty filter makes your HVAC system work harder, reducing efficiency and raising your energy bills.